Granted Patent
Utility
US 4,777,086 · App. 07/112,358
Low density insulation product
Inventors:
Martin J. Madden, Mark Andrew Lang
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Oct 26, 1987
Inventors
Martin J. Madden
Mark Andrew Lang
Assignee (at issue)
Owens-Corning Fiberglas Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.